Great article :eyebulge: Answers a lot of questions I had. Although it seems to be written mainly from one manufactuers point of view
Also followed up some of the manufacturers and found this for Powerchip -
"Concerned about your new car’s warranty? Don’t be. The Powerchip upgrade is undetectable, plus you can reset your car to its original setting when you want to. In the tens of thousands of instances where a Powerchip performance software upgrade has been installed, not one instance of damage
has ever occurred or been in some way attributed to Powerchip. An additional full power train warranty is also available from Powerchip.
The power train warrranty may be of interest if your concrened about the DSG handling te extra power.